Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
ban xanh » ban hanh, ban anh, ban banh
tu sach » su sach, te sach, tu cach
xanh di » danh di, vanh dai, xanh tai
xuc ban » duc ban, cuc ban, quoc ban
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
nang ro » nang co, nang ho, nang ra
va cam » va cham, va cac, va cao
nang o » nang co, nang ho, nang x
di cua » dai cua, doi cua, de cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thu sach)) ky ((nang o) or (nang ro)) hoi. hieu va cam xuc ban xanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky ((nang o) OR (nang ro)) hoi. hieu va cam xuc ban xanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky ((nang o) or (nang ro)) hoi. hieu va cam xuc ban xanh di cua tre*.